Circuits intégrés d'interface
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Produits (1568)
USB2513B/M2 - 3-Port USB 2.0 Hi-Speed Hub Controller | Microchip
The Microchip Technology USB2513B/M2 is a 3-port, low-power, USB 2.0 Hi-Speed hub controller with integrated MultiTRAK™ multi-transaction translators, housed in a 36-pin SQFN (6x6 mm) package. It supports Low-Speed, Full-Speed, and Hi-Speed downstream devices on a single upstream port, and operates from a single 3.3 V supply with an internal regulator. A USB hub controller is a peripheral device that expands a single USB root port into multiple downstream ports, allowing several USB devices to share one upstream connection. USB hubs sit in the USB 2.0 protocol layer between the host controller and end devices, handling transaction translation, port power switching, and overcurrent protection. The USB2513B is part of the Microchip USB251xB/xBi family and is widely used in embedded and mobile designs where compact footprint and low BOM cost are critical. Key features of the USB2513B/M2 include support for USB 2.0 Hi-Speed (480 Mbps), full-speed (12 Mbps), and low-speed (1.5 Mbps) operation, individual or ganged downstream port power switching with overcurrent protection, Battery Charging 1.1 (BC1.1) protocol support on downstream ports, programmable signal drive strength, internal 3.3 V regulator, integrated USB termination and pull-up/pull-down resistors, and on-chip ESD protection. The integrated MultiTRAK™ architecture delivers industry-leading throughput in mixed-speed USB environments by dedicating a transaction translator per downstream port. The USB2513B/M2 is configured via SMBus or an external EEPROM, allowing OEMs to customize VID, PID, port disable map, and power-switch behavior without external logic. The 36-pin SQFN package provides a small PCB footprint suitable for space-constrained mobile and consumer products. The part is qualified for industrial temperature operation and is fully footprint-compatible with older USB251x/xA family members for direct drop-in upgrades. Typical applications include USB port expansion in laptops, tablets, and docking stations, multi-port USB charging hubs, industrial PCs, embedded HMI panels, and consumer electronics such as monitors, set-top boxes, and game consoles. BC1.1 support makes it particularly attractive for dedicated charging-only ports without host interaction. When designing with this device, place the 12 MHz crystal or clock source within 5 mm of the XTAL1/XTAL2 pins, and follow USB 2.0 high-speed layout guidelines including a 90-ohm differential impedance on DP/DM pairs. Decouple VBUS with a 4.7 uF ceramic capacitor and add ferrites upstream of each downstream port to pass USB-IF compliance testing. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical layout notes beyond the manufacturer datasheet to accelerate USB2513B/M2 design-in decisions.
USB2514-HZH USB 2.0 Four-Port Hub Controller | Microchip
The Microchip Technology USB2514-HZH is a USB 2.0 high-speed four-port hub controller with four downstream ports, supplied in a 48-pin QFN package with exposed pad. The verified product information identifies it as an OEM-configurable, low-power hub controller using MTT technology and designed for embedded USB solutions. Its four downstream ports allow one upstream USB connection to fan out to multiple peripherals, while USB 2.0 compliance supports high-speed and mixed-speed USB environments. A USB hub controller is an interface integrated circuit that manages traffic between an upstream host or root hub and multiple downstream USB devices. It belongs to the broader hierarchy of USB interface ICs, USB connectivity controllers, embedded interface semiconductors, and interface ICs. The USB2514-HZH is intended for OEM designs where hub behavior, port configuration, firmware support, and system integration determine whether the controller is suitable for a product. The verified data specifically describes the USB2514-HZH as a USB 2.0 high-speed four-port hub controller with four downstream ports. It is also described as low power and OEM configurable. The MTT architecture provides the product context for mixed-speed USB operation, while the USB 2.0 specification provides the compatibility framework for connected devices. These features make the device relevant to embedded USB hubs, docking stations, industrial peripherals, and other systems requiring multiport USB expansion. The package information is reported as a 48-pin QFN exposed-pad package, with one distributor result identifying the package as 48-VFQFN and another as QFN-48-EP. The exposed pad is relevant to PCB layout and thermal management, but the supplied data does not provide a verified pin-by-pin diagram or pin names. Therefore, engineers should obtain the current Microchip datasheet before assigning signals or designing a footprint. Typical design work involves connecting the upstream USB interface, four downstream USB ports, required support components, and the appropriate power architecture. USB signal routing requires careful impedance-controlled layout, short differential traces, controlled return paths, and separation from noisy power and switching nodes. Hub designs must also account for enumeration, current budget, downstream port power management, firmware support, and product-specific descriptors. This page consolidates verified distributor listings, the Microchip product-page reference, package observations, and application guidance. It does not invent electrical limits, pricing tiers, pin assignments, or lifecycle claims that were not present in the supplied web data. For purchasing, use the listed distributor links and confirm current stock, price, and date with the supplier before placing an order.
USB2514B-AEZC - 4-Port USB 2.0 Hi-Speed Hub Controller | Microchip
The Microchip Technology USB2514B-AEZC is a 4-port USB 2.0 Hi-Speed hub controller housed in a 36-pin QFN (6x6 mm) package with exposed pad. It operates from a 3.0V to 3.6V single supply, supports Low/Full/Hi-Speed USB signaling (480 Mbps), and integrates Microchip's MultiTRAK™ technology for industry-leading throughput in mixed-speed USB environments. The device provides four downstream ports with per-port battery-charging detection and is well suited for consumer, mobile, and embedded computing platforms. What is a USB hub controller? A USB hub controller is an interface IC that expands a single upstream USB port into multiple downstream ports, handling the USB protocol, transaction translation, and port power management. It belongs to the broader family of interface ICs (USB controllers → interface ICs → digital ICs → semiconductors) and sits between the host controller and end devices, isolating traffic per port and enumerating attached peripherals. Key features include USB 2.0 Hi-Speed compliance, integrated 1.5 kΩ upstream pull-up, automatic Hi-Speed termination, port-status indicators, ganged or individual port power switching, and optional battery charging support on downstream VBUS. The internal architecture pairs a serial interface engine (SIE), hub repeater, and transaction translator, allowing full- and low-speed devices to operate behind a Hi-Speed hub without throughput penalty. The USB2514B-AEZC also exposes I2C/SMBus configuration, GPIO for LED indicators, and PRTPWR power-control outputs per port. Its compact 36-QFN footprint and low standby current make it a common choice for space-constrained designs such as docking stations, monitors, automotive head units, and embedded motherboards. Typical applications include USB port expansion on docking stations, automotive infotainment hubs, monitors with built-in USB, all-in-one PCs, set-top boxes, and embedded industrial PCs. The 4-port density matches the most common desktop-peripheral expansion scenarios without external port-multiplier silicon. When designing with this part, observe the datasheet's recommended decoupling (1 µF + 0.1 µF near VBAT and VDD33) and provide a stable 3.3V rail. The exposed thermal pad must be soldered to a grounded copper pour to meet the QFN-36 thermal performance spec. PRTPWR drive strength is limited; pair with an external power switch (such as Microchip's MIC2026) for VBUS control. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone.
USB2514B/M2 - 4-Port USB 2.0 Hub Controller | Microchip
The Microchip Technology USB2514B/M2 is a 4-port USB 2.0 Hi-Speed hub controller packaged in a 36-SQFN measuring 6 x 6 mm. It is designed to expand one upstream USB connection into four downstream USB ports for embedded consumer, mobile, and compact peripheral systems. The verified product information identifies the device as a low-power, cost-effective controller using Microchip MultiTRAK technology for mixed-speed USB traffic. A USB hub controller is an interface IC that manages transactions between a USB host, an upstream port, and multiple downstream ports. It belongs to the USB interface-controller hierarchy, combines interface logic and USB connectivity, and is used to add device connectivity without requiring four independent host controllers. USB 2.0 Hi-Speed denotes the 480 Mb/s operating mode, while the four-port configuration consolidates peripheral expansion into a single embedded device. The verified data specifically confirms four USB 2.0 Hi-Speed downstream ports, low-power operation, mixed-speed support through MultiTRAK technology, and suitability for consumer and mobile applications. The controller can reduce external USB switch complexity by integrating hub-management functions into one package. The 36-SQFN footprint also supports compact PCB layouts, although exposed-pad thermal management and careful high-speed routing remain essential. In a typical design, the USB2514B/M2 connects between a USB host and four downstream connectors. Each downstream branch requires appropriate USB data routing and power-path design, while the hub itself needs a suitable reference, clock, decoupling, and configuration implementation defined by the manufacturer datasheet. Because the provided data does not state operating voltage, current, clock frequency, or pin names, those values must be confirmed before schematic sign-off. The USB2514B/M2 is appropriate for docking accessories, compact embedded hubs, mobile accessories, printers, storage peripherals, and consumer equipment where four USB ports are required. Compared with the USB2513B-AEZC family member, its defining advantage is the verified four-port configuration rather than three ports; board compatibility should not be assumed solely from that functional similarity. For implementation, preserve the manufacturer-recommended USB differential impedance, minimize stubs and unnecessary vias, and keep sensitive clock and reference routing away from high-current switching nodes. Verify downstream-port current limits, power-switch selection, enumeration behavior, and thermal performance against the final enclosure and accessory load. This page consolidates verified distributor information, manufacturer product positioning, same-package comparison data, and practical integration guidance. It distinguishes confirmed USB2514B/M2 facts from parameters that require the official datasheet, helping engineers identify the correct hub controller without treating incomplete distributor summaries as complete electrical specifications.
USB2517-JZX - 7-Port USB 2.0 Hi-Speed Hub Controller | Microchip
The Microchip USB2517-JZX is a versatile, cost-effective, and power-efficient 7-port USB 2.0 Hi-Speed hub controller IC in a 64-pin QFN (9x9 mm) package with exposed thermal pad, designed for low-power, small-footprint embedded USB applications. It provides seven downstream USB ports, supports Low-Speed (1.5 Mbps), Full-Speed (12 Mbps), and Hi-Speed (480 Mbps) downstream devices, and operates from a 1.8V/3.3V supply rail. A MultiTRAK™ multi-transaction translator enables concurrent Full-/Low-Speed traffic on multiple downstream ports without bandwidth starvation, and the upstream port supports Hi-Speed operation in accordance with the USB 2.0 specification (April 27, 2000, with 12/7/2000 and 5/28/2002 errata). A USB hub controller is an Interface IC that aggregates multiple USB peripherals behind a single upstream port, presenting each downstream port to the host as an independent device while managing enumeration, power, and transaction translation. Within the broader system hierarchy, the USB2517-JZX sits at Interface IC → USB Controller → USB Hub Controller → USB 2.0 Hi-Speed Hub. Hub controllers are essential building blocks of docking stations, monitors, embedded industrial PCs, and consumer electronics that need to expand a single host USB root port into several usable downstream ports. Key features include per-port or ganged power switching, individual port over-current sensing, integrated 1.5 kΩ upstream pull-up resistor, OTP/serial EEPROM configuration, and support for both bus-powered and self-powered hub topologies. The 64-QFN package with EP provides low thermal resistance and a small 9x9 mm PCB footprint. The device supports SMBus or I²C configuration, complies with USB Battery Charging Specification 1.1 pre-configurations, and integrates an internal 3.3V regulator requiring only a single 3.3V supply or a 5V VBUS-derived rail. The architecture combines a USB 2.0 physical layer (PHY) and a serial interface engine (SIE) per port with a hub repeater and a MultiTRAK transaction translator. This allows multiple Full-/Low-Speed devices to communicate simultaneously with the host at full USB 2.0 bandwidth, eliminating the bandwidth bottleneck found in single-TT hub designs. The hub repeater handles connect/disconnect, suspend/resume, and reset signaling, while per-port PHYs provide signal integrity at 480 Mbps across PCB traces of typical lengths. Typical applications include USB port expansion in monitors, docking stations, industrial PCs, embedded computing, and consumer hubs. It is also used in test equipment, automotive infotainment head units, and any product that must turn one host port into seven USB 2.0 ports. The 1.8V/3.3V flexible supply and small 9x9 mm QFN make it ideal for space-constrained embedded designs. When designing with this part, ensure that the upstream port's 90 Ω differential pair is routed as a length-matched, impedance-controlled USB 2.0 microstrip with a continuous reference ground plane. Place the 480 MHz crystal or oscillator reference as close as possible to the XI pin, and decouple each VDD pin with a 0.1 µF X7R ceramic cap tied to a solid ground pour. A common pitfall is forgetting to populate the upstream series choke or ESD protection array; the hub will enumerate but fail USB-IF compliance without these. This page synthesizes current distributor pricing, same-brand drop-in alternatives from the USB251x family, and practical design notes that go beyond the manufacturer datasheet to help engineers shorten time-to-prototype.
USB2517I-JZX-TR - 7-Port USB 2.0 Hub | Microchip
The Microchip Technology USB2517I-JZX-TR is a USB 2.0 seven-port hub controller with seven downstream ports, USB 2.0 compliance, and a 64-pin QFN package measuring 9 mm by 9 mm. It is designed for embedded USB systems requiring low-power, configurable hub expansion. The controller supports Low-Speed, Full-Speed, and Hi-Speed downstream devices when operating as a Hi-Speed hub, while its upstream attachment can operate as a Full-Speed or Full-/Hi-Speed hub. A USB hub controller is an interface semiconductor that manages traffic between one upstream USB host and multiple downstream devices. It belongs to the USB interface controller, interface IC, and connectivity semiconductor hierarchy. The USB2517 family uses MultiTRAK technology to support mixed-speed USB environments while helping embedded designs consolidate multiple peripheral connections behind one upstream host interface. The USB2517I is identified in the verified data as the industrial-temperature-rated member of the USB2517 family. Its 64-QFN 9 x 9 mm package supports compact embedded implementations, while the integrated hub function reduces the need for discrete USB routing and control components. The device is described by Microchip as low power and OEM configurable, making it suitable for system-level USB port expansion where firmware, hub configuration, and downstream-port requirements are controlled by the OEM. Typical embedded uses include industrial equipment, test systems, printers, storage appliances, communications equipment, and other products that need more USB connections than a host controller provides directly. Because USB2517I is a hub rather than a host controller, the system still requires an upstream USB host or host-capable controller. The hub’s downstream devices can include low-speed, full-speed, and hi-speed USB peripherals, subject to the operating mode and system configuration. Designers should verify the complete pinout, power requirements, crystal or clock implementation, port-enable behavior, and configuration requirements against the manufacturer datasheet before layout. The 64-QFN package also requires careful exposed-pad thermal and assembly planning. This page combines verified manufacturer, distributor, and datasheet information with practical design context; unsupported electrical details remain marked for data completion rather than inferred.
USB2642-I/ML - USB 2.0 Hub Card Reader | Microchip
The Microchip Technology USB2642-I/ML is a USB 2.0 high-speed hub and flash media card controller combination IC with two downstream USB ports and an SD/MMC interface, supplied in a 48-QFN 7 mm × 7 mm package. It operates from a 3.3 V supply and supports low-speed, full-speed, and high-speed USB devices. The integrated design combines USB expansion and flash media reader/writer functionality in one controller. A USB hub controller is an interface device that expands one host USB connection into multiple downstream ports while managing USB traffic and device connections. A flash media card controller provides read/write access to supported SD or MMC flash media. In the broader electronics hierarchy, the USB2642 belongs to interface ICs, USB interface controllers, USB 2.0 hub controllers, and combined flash media controllers. The principal verified features are USB 2.0 compliance, high-speed operation, two downstream USB ports, and one SD/MMC flash media card interface. Its 48-QFN package supports compact surface-mount designs, while the exposed-pad package construction provides a defined thermal and electrical land pattern. The device is intended for systems that need local USB port expansion together with removable flash-media connectivity. Typical uses include USB docking stations, compact desktop computers, consumer electronics, card-reader equipment, printers, storage accessories, and embedded USB peripherals. Because the controller consolidates hub and media-card functions, it can reduce the number of separate interface devices required in a compact system. Designers must still account for USB signal routing, connector protection, supply decoupling, card-detect wiring, and the exposed thermal pad when laying out the PCB. For USB2642-I/ML designs, confirm the exact pin functions, electrical limits, reference circuitry, and supported media details against the Microchip datasheet before release. USB high-speed pairs require controlled impedance and careful return-path continuity; card-interface traces should be kept away from noisy switching nodes. The part is not a general-purpose power semiconductor, so a Safe Operating Area chart is not applicable. This page combines the verified manufacturer and distributor information with package, application, procurement, and replacement guidance. It is intended to help engineers identify whether the USB2642-I/ML matches a USB hub plus flash-media architecture before committing the 48-QFN footprint to a PCB layout.
USB2642/ML - USB 2.0 Hub and Card Controller | Microchip
The Microchip Technology USB2642/ML is a USB 2.0 hi-speed hub and flash media card controller combo with 2 downstream USB ports and an SD/MMC interface, supplied in a 48-QFN package. It operates from a 3.3 V supply according to the verified distributor data. The device combines USB expansion and flash media reader/writer integration in one controller. A USB hub controller is an interface semiconductor that manages one upstream USB connection and distributes traffic to downstream ports. A flash media card controller adds access to removable memory through SD or MMC interfaces. The USB2642/ML therefore belongs to the USB interface IC hierarchy: USB controller, interface IC, semiconductor, and embedded connectivity device. The principal features are USB 2.0 high-speed operation, two downstream USB 2.0 ports, and an SD/MMC flash media interface. The verified manufacturer description also identifies the device as a cost-effective, energy-efficient, fully integrated solution. Its integrated design can reduce the need for separate hub and media-reader interface circuitry while supporting both USB expansion and card access. The USB2642/ML is suitable for compact USB hubs, card readers, multifunction peripherals, docking systems, and embedded USB storage products. According to the manufacturer product page, it provides a USB expansion and flash media reader/writer combination in a single chip. The datasheet search results additionally describe sustained flash-media transfer rates exceeding 35 MB/s, although the exact system throughput depends on the attached device and implementation. Designs must follow the manufacturer datasheet for decoupling, USB signal routing, card-interface layout, and exposed-pad thermal management. USB differential pairs should be routed with controlled impedance and minimized discontinuities. The SD/MMC interface and USB connectors should be placed to reduce signal coupling, while the power network should provide low-impedance return paths for both digital and high-current USB loads. This page consolidates the verified manufacturer and distributor information, procurement context, package details, and application guidance for USB2642/ML. It also distinguishes the available same-family Microchip variants without presenting unverified cross-brand replacements as drop-in equivalents.
USB2642T/ML USB 2.0 Hub and Flash Controller | Microchip
The Microchip Technology USB2642T/ML is a USB 2.0 high-speed hub and flash media card controller combo with USB, I2C, and SPI interfaces, supplied in a 48-QFN 7x7 mm package. It integrates USB expansion with flash-media reader and writer functionality, supporting low-speed, full-speed, and high-speed USB 2.0 devices. The device is identified by distributor listings as a specialized controller-interface IC with a 48-QFN package and exposed pad. A USB hub controller is an interface IC that expands one host USB port into multiple downstream connections while managing USB traffic and device attachment. The flash media card controller portion adds access to supported flash media formats, creating a compact bridge between a USB host, USB peripherals, and removable storage. This combination is useful in docking stations, embedded systems, printers, set-top equipment, and compact industrial controllers where board space and peripheral integration are important. The verified device data identifies USB 2.0 low-, full-, and high-speed operation, I2C and SPI interfaces, USB hub functionality, and flash-media controller functionality. The 48-QFN package provides a high pin count for integrated USB and storage connectivity, while the exposed pad supports thermal management on a suitably designed PCB. The exact supported media formats, electrical limits, operating-temperature range, and complete pin assignment are not provided in the supplied search data and must be confirmed from the manufacturer datasheet. Typical implementation places the USB2642T/ML between a USB host controller and downstream USB ports, with flash-media interfaces serving external storage devices. Firmware must configure the hub and media-access functions, while the host system supplies reference, clock, power, and I2C or SPI control. Designers should follow Microchip's USB routing, impedance, decoupling, and exposed-pad guidance rather than treating the QFN footprint as a generic package. The principal design consideration is signal integrity. USB high-speed edges require controlled impedance, short routing, continuous return paths, minimized stubs, and careful separation from noisy power and digital clocks. The exposed thermal pad must be connected to the intended ground or thermal plane according to the datasheet land pattern, and adequate decoupling must be placed close to the supply pins. This page combines verified manufacturer and distributor descriptions, practical USB design considerations, and explicit data gaps for parameters not present in the supplied source material.
USB2660I-JZX-03 - USB 2.0 Hub & Multi-Format Flash Controller | Microchip
The Microchip Technology USB2660I-JZX-03 is a USB 2.0 Hi-Speed hub controller combined with a multi-format flash media reader/writer and dual Secure Digital (SD) interfaces, integrated in a single chip. Per the Microchip USB2660/USB2660i datasheet (DS00001931B), this combo device delivers up to 480 Mbps Hi-Speed USB performance, two downstream USB 2.0 ports, and multi-format flash card support including SD, MMC, Memory Stick, and xD-Picture Card. The device is housed in a 64-pin QFN (JZX) 9x9 mm package with exposed thermal pad, designed for surface mount desktop and notebook PC applications. The industrial temperature grade (-40C to +85C) makes the USB2660I variant suitable for non-consumer embedded use cases where the commercial-grade USB2660 is insufficient. A USB 2.0 Hi-Speed hub controller is a category of USB peripheral that aggregates multiple downstream ports and card-reader functions behind a single upstream port, while a flash media controller is a class of storage interface IC that bridges a host processor to removable flash memory cards using standardized protocols such as SD, MMC, and MSPro. The USB2660I sits at the intersection of these two product types, forming part of the broader USB interface IC hierarchy: USB peripheral controller -> USB hub controller -> combo hub + media reader -> Microchip USB264x/2660 family. This combination reduces PCB area, BOM count, and design complexity for system integrators that would otherwise need a separate hub chip and card-reader chip. Key features of the USB2660I-JZX-03 include 2 downstream USB 2.0 Hi-Speed ports, an internal transaction translator for mixed-speed USB environments, multi-format flash card support with dual SD interfaces, integrated card power FETs, on-board 24 MHz crystal driver, and USB-IF certified hub silicon. The chip is USB 2.0 compliant and supports Suspend and low-power modes per the USB specification. Programmable through an external I2C EEPROM, the device enables custom vendor/product IDs, string descriptors, and manufacturer-specific behavior. Internally the USB2660I uses Microchip's proven UTMI+ compliant physical layer and a hardened Hi-Speed USB 2.0 hub topology that delivers industry-leading data throughput in mixed-speed environments where some downstream devices run at Full-Speed (12 Mbps) and others at Hi-Speed (480 Mbps). The integrated media controller supports USB Mass Storage class and SDIO bridging, enabling SDIO peripherals to enumerate over USB with custom firmware. Typical applications include desktop and notebook PCs, multi-function printers with card reader slots, docking stations, set-top boxes, and industrial panel PCs that expose SD card slots and multiple USB ports to end users. Designers use the USB2660I-JZX-03 to consolidate USB expansion and media reading onto a single 9x9 mm QFN. When designing with the USB2660I-JZX-03, allocate at least four PCB layers for clean USB signal routing, route the differential DP/DM pair as a 90-ohm impedance-matched pair, and provide a local 0.1 uF decoupling cap adjacent to every power pin. The exposed thermal pad must be soldered to a contiguous ground pour to meet USB-IF Hub Certification thermal-rise limits.
USB3320C-EZK - Hi-Speed USB 2.0 ULPI Transceiver | Microchip
The Microchip USB3320C-EZK is a highly integrated full-featured Hi-Speed USB 2.0 transceiver built on the proven ULPI (UTMI+ Low Pin Interface) standard, housed in a 32-pin QFN (5x5 mm) package. It supports 480 Mbps High-Speed and 12 Mbps Full-Speed USB signaling, operates from a single 3.3 V supply with on-chip 1.8 V LDO regulator, and provides up to +30 V VBUS ESD protection on the USB connector side. A USB 2.0 transceiver (also called a PHY) is the physical-layer analog block that sits between a digital SoC's ULPI/UTMI link and the differential DP/DM lines of a USB connector. It handles HS chirp, packet detection, serializer/deserializer, and clock recovery, while leaving link-layer protocol to the host controller. Within the system hierarchy, the USB3320C-EZK is a peripheral controller companion IC: SoC (application processor) -> ULPI link -> USB3320 PHY -> DP/DM -> USB connector. This split architecture lets designers pair an inexpensive PHY with any SoC that exposes ULPI pins (NXP i.MX, ST STM32, Xilinx Zynq, TI Sitara). Key electrical characteristics include 480 Mbps Hi-Speed data rate, internal 1.8 V regulator eliminating external LDO, integrated 45 ohm HS termination resistors (no external Rs needed), 8-bit single-data-rate ULPI interface with 60 MHz reference clock, and integrated USB charger-detection hardware. The device is USB 2.0 specification compliant, USB Battery Charging v1.2 capable, and OTG-ready via the ID pin. The architecture uses a 60 MHz reference clock input (REFCLK) generated by the SoC, an internal PLL multiplies to 480 MHz for HS operations. A digital state machine handles UTMI/ULPI command interpretation, while the analog block performs line termination, current-mode driver bias, and disconnect detection. The chip supports both host and peripheral roles. Typical applications include USB 2.0 device/host ports on single-board computers, OTG ports on industrial tablets, automotive infotainment USB interfaces, medical device USB ports, and 5G/LTE modem modules with USB 2.0 diagnostic channels. Designers favor the USB3320C-EZK over UTMI-only PHYs because ULPI slashes pin count to 12 versus UTMI's 30+. When designing with this device, maintain 90-ohm differential impedance on DP/DM traces to the connector, place decoupling capacitors on VDD33/VDD18/VBAT as close as possible to the IC, and ensure the REFCLK signal has less than 50 ps jitter to pass USB compliance. Do not omit the ID pin pull-up for OTG or charger-detection operation.
USB3803 - 3-Port USB 2.0 Hi-Speed Hub Controller | Microchip
The Microchip USB3803 is a three-port USB 2.0 Hi-Speed hub controller optimized for portable, battery-powered embedded systems, integrating BC 1.1 charger detection, flexible internal power regulators, and a 25-ball WLCSP package. It connects to an upstream port as a Full-Speed or Hi-Speed hub and supports Low, Full, and Hi-Speed downstream devices on all enabled ports. The device targets tablets, smartphones, and other mobile platforms where small footprint, low standby current, and minimal BOM are critical design constraints. A USB hub controller is a dedicated interface IC that aggregates multiple downstream USB ports behind a single upstream port, handling transaction translation, port power control, and suspend/resume signaling. In the broader USB-IF taxonomy, hubs sit between hosts (root hubs inside PC chipsets) and peripherals, implementing Chapter 11 of the USB 2.0 specification. The USB3803 belongs to the "embedded hub" sub-category, optimized for integration into battery-powered devices rather than stand-alone retail hubs. Key features include 480 Mbps Hi-Speed upstream support, integrated USB-IF Battery Charging 1.1 detection on the upstream port, integrated 5V-to-3.3V and 1.8V regulators, a serial slave (I2C) interface for status/configuration, and ultra-low standby and bypass current modes. The WLCSP-25 package measures only 2.0 x 2.0 mm, enabling placement on space-constrained mobile mainboards. Microchip's Bypass mode (USB3803C variants) reduces quiescent current to single-digit microamperes when the host is off, directly extending battery life. Architecturally, the USB3803 integrates a Hi-Speed UTMI/ULPI-less PHY, a serial interface engine (SIE), per-port transaction translators, and the charger-detection analog block. The on-chip regulators remove the need for external LDO components when powered from a single 5V VBAT rail, further shrinking BOM count. The I2C serial slave interface exposes charger-status and configuration registers, allowing the application processor to query attach type, port power status, and override default settings. Typical applications include tablets and 2-in-1 laptops requiring one USB-A expansion port, smartphone accessories with OTG-to-host bridging, portable medical devices, and embedded infotainment head units. The charger-detection block also enables the device to act as a charger-sensing front-end, reporting Standard Downstream Port (SDP), Charging Downstream Port (CDP), or Dedicated Charging Port (DCP) classification back to the application processor over I2C. When designing with this part, allocate adequate PCB area under the WLCSP for the exposed die pad and route the 90-ohm differential USB pairs with controlled impedance. Microchip's USBCheck online design review service is available free of charge to qualified customers using the USB3803 in production designs. This page synthesizes distributor stock, application-grade alternatives, and practical layout notes not found in the manufacturer datasheet, giving embedded engineers a single decision-ready reference.
USB5742/2G - 2-Port SS/HS USB 3.1 SmartHub Controller | Microchip
The Microchip USB5742/2G is a 2-port, low-power SuperSpeed/Hi-Speed USB 3.1 Gen 1 SmartHub hub feature controller with 2 downstream ports, housed in a 56-pin VQFN (7x7 mm) package with exposed thermal pad. It supports USB 3.1 SuperSpeed (5 Gbps), USB 2.0 Hi-Speed (480 Mbps), Full-Speed (12 Mbps), and Low-Speed (1.5 Mbps) downstream traffic, and includes SPI/SMBus configuration interfaces for OEM-flexible firmware customization. A SmartHub is a USB hub controller IC with integrated bridge logic and configurable firmware that adds value features beyond the basic USB hub function defined by the USB-IF. As a category, SmartHub belongs to the USB Interface IC family (a subset of Interface ICs > Integrated Circuits), sitting between root hosts and downstream USB peripherals and providing functions such as port-power switching, per-port enable, programmable GPIO, and flexible upstream port mapping. The USB5742 specifically implements Microchip's fifth-generation USB 2.0 hub feature controller operating in parallel with a SuperSpeed transaction translator, decoupling 5 Gbps SuperSpeed signalling from legacy 480 Mbps traffic and removing the legacy FS/LS signalling bottleneck of older USB-IF transaction translator rules. Key features include full USB Battery Charging v1.2 support including CDP/DCP modes, integrated 5 V VBUS switch drivers with per-port overcurrent protection, USB Link Power Management (LPM) Addendum compliance for U1/U2/U3 low-power states, role-swapping for reversible Type-C wiring, and Microchip's proprietary Multi-Transaction Translator (Multi-TT) for full 480 Mbps bandwidth on all downstream ports simultaneously. The device operates from a single 3.3 V supply, integrates a 5 V to 3.3 V regulator for internal logic, and the -40C to +85C industrial temperature grade supports embedded OEM use. Typical applications include two-port docking stations, embedded USB expansion for industrial PCs, automotive rear-seat USB chargers, USB Type-A wall chargers with smart-charging, and head-unit infotainment connectivity modules. The SPI host interface allows an external MCU to enumerate attached devices, customize charging profiles, and read port events. When designing with the USB5742/2G, ensure the 56-VQFN exposed pad is properly soldered to a contiguous ground plane of at least 1 square inch to meet the 90 mA unconfigured VBUS-current budget. Bypass the 3.3 V rail with 10 uF + 100 nF ceramic capacitors placed within 5 mm of the supply pin, and follow USB-IF HS/SS routing rules (90-ohm differential impedance, intra-pair skew under 15 ps). This page synthesizes distributor pricing, drop-in equivalent SmartHub alternatives, and practical layout guidance not found in the standalone manufacturer datasheet.
USB5807C-I/KD - 7-Port USB 3.2 Gen 1 SmartHub IC | Microchip
The Microchip USB5807C-I/KD is a 7-port, SuperSpeed USB 3.2 Gen 1 SmartHub IC delivering 5 Gbps downstream bandwidth, housed in a 100-pin VQFN EP (12x12 mm) package with industrial temperature grade (-40C to +85C). It supports USB Type-C with integrated USB-C MUX logic, I2C and SPI management interfaces, and Microchip's MultiTRAK, ProTouch, and PortSwap signal-integrity features. A SmartHub is a USB hub that integrates system-level functions typically performed by a separate MCU or processor. In a typical USB topology, a hub sits between the host (root port) and downstream devices, repeating the differential data and managing power and protocol states. The SmartHub class adds vendor configuration, role-swap (USB-C DRP), GPIOs, and optional firmware-driven behaviors that offload the system processor, which is critical in space-constrained embedded designs. The USB5807C family sits in Microchip's hub-controller hierarchy above the USB251x 2.0-only hubs and below larger 10-port parts like the USB5744. Key features include full USB 3.2 Gen 1 (formerly 3.1 Gen 1 / USB 3.0) 5 Gbps SuperSpeed plus USB 2.0 High-Speed/Full-Speed/Low-Speed backward compatibility on all 7 enabled downstream ports, integrated FlexConnect role-swap, per-port battery charging support (BC1.2), and unique 1.2V/3.3V dual-rail operation that simplifies internal rail generation. Per-port USB-C MUX integration eliminates external crossbar switches, reducing BOM cost and PCB area in USB-C docking designs. Architecturally, the device combines a SuperSpeed USB 3.2 Gen 1 physical layer (PHY), a USB 2.0 PHY, an embedded microcontroller for hub repeater logic, configuration ROM/OTP, and an I2C/SPI slave for host MCU management. The 100-VQFN exposed-pad package provides thermal dissipation suitable for industrial ambient operation without external heatsinking. Typical applications include USB-C docking stations, automotive head-unit USB hubs, thin-client monitors with embedded USB, USB-C monitors, embedded industrial PCs, and any USB-C multiport expansion where role-swap and charging are required. The 12x12 mm VQFN with 0.4 mm pitch is footprint-compatible with the USB5744 family for tier-up/down design reuse. When designing with this device, allocate a 4-layer PCB stack-up to maintain 90 ohm differential impedance for SuperSpeed lanes. Decouple both the 1.2V core and 3.3V I/O rails with 100 nF plus 4.7 uF ceramic capacitors placed within 2 mm of the supply pins. The exposed pad MUST be soldered to a continuous ground plane via a 5x5 thermal via array. This page synthesizes distributor pricing, drop-in alternative MPNs, and practical PCB layout notes that are not consolidated in the manufacturer datasheet alone, giving engineers a single reference for design-in decisions.
USB5807CT/KD - 7-Port USB 3.2 Gen 1 SmartHub, VQFN-100 | Microchip
The Microchip USB5807CT/KD is a 7-port, SuperSpeed (SS) USB 3.2 Gen 1 SmartHub controller IC delivered in a 100-pin VQFN (12 mm x 12 mm) package with exposed thermal pad. It is USB-IF compliant under TID1595 against the USB 3.2 Gen 1 specification, supports 5 Gbps Super-Speed plus 480 Mbps Hi-Speed, 12 Mbps Full-Speed, and 1.5 Mbps Low-Speed USB signaling, and exposes I2C/SPI host management interfaces for OEM configuration. Operating supply range is 1.08 V to 3.3 V with an operating temperature window of 0 C to +70 C for the commercial CT suffix variant. A USB hub controller is a specialized interface IC that aggregates one upstream USB port into multiple downstream ports while handling the protocol stack, port power management, and traffic scheduling. SmartHubs add OEM-configurable firmware layers (MultiTRAK, flexPORT, PortSplit) on top of the standard hub state machine, enabling per-port behavior tuning, custom charging profiles, and signal-integrity adjustments without external logic. Within the broader IC hierarchy, USB5807CT/KD belongs to Interface ICs > USB Hubs > USB 3.x Hub Controllers > Power-Managed SmartHub family. Key features include 7 downstream ports configurable as USB 3.2 Gen 1 or USB 2.0, native USB Type-C support via integrated MUX logic, MultiTRAK and PortSplit technology for per-port tuning, I2C and SPI host management interfaces, and Broadcom/Microchip-proprietary low-power states with optimized thermal dissipation. The VQFN-100 package provides a compact 12 mm x 12 mm footprint suitable for embedded designs and dock/monitor applications where board area is constrained. The device uses a low-power architecture with embedded USB 3.x PHYs and a configurable hub feature ROM accessed via SPI. PortSplit allows simultaneous USB 3.x and USB 2.0 operation on the same downstream port, enabling embedded USB 3.x peripherals alongside legacy USB 2.0 devices without external muxes. Driver compatibility covers Microsoft Windows 10/8/7/XP, Apple OS X 10.4+, and mainstream Linux hub drivers, removing the need for custom host stacks. Typical applications include USB-C docking stations, multi-port USB hubs, monitors with integrated USB expansion, embedded industrial USB fan-out, and Type-C breakout boards. Choose USB5807CT/KD when a 7-port SS hub with OEM-tunable power/charging profiles is required in a thermally-constrained enclosure. When designing with this part, ensure adequate copper area under the exposed pad and route SuperSpeed pairs with 90 ohm differential impedance. The host MCU must configure PortSplit, flexPORT, and charging parameters via I2C/SPI before downstream ports enumerate at full capability. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that complement (but do not replace) the manufacturer datasheet DS00002237D and Microchip configuration tools.
USB7056-I/KDX - 6-Port USB 3.2 Gen1 PD SmartHub | Microchip
The Microchip USB7056-I/KDX is a low-power, OEM-configurable 6-port USB 3.2 Gen 1 PD SmartHub controller in a 100-pin VQFN (12x12 mm) package with industrial temperature rating. It integrates a SuperSpeed USB 3.2 Gen 1 hub with native USB Type-C support, a legacy USB 2.0 hub for HS/FS/LS operation, and an on-board USB Power Delivery (PD) controller, providing 6 downstream ports with one Type-C upstream and five Type-A downstream configuration in the KDX pinout. A USB hub controller (USB 3.0/3.2 Gen 1 hub) is a semiconductor device that expands a single upstream USB port into multiple downstream ports, while managing enumeration, power, and protocol translation. The USB hub sits within the broader USB connectivity IC hierarchy: USB hub controller -> USB interface IC -> connectivity semiconductor -> IC. SmartHub variants add on-board PD negotiation and Type-C cable-orientation logic, eliminating the need for an external PD controller in Type-C sink/source designs. Key features include USB 3.2 Gen 1 (5 Gbps) SuperSpeed with native Type-C support, integrated USB PD 3.0 controller, broad host interfaces (GPIO, I2C, I2S, SPI, UART) for peripheral control, flexible GPIOs for status and indicators, integrated 5V LDO regulators for downstream VBUS, and support for battery charging (BC1.2) on each downstream port. The KDX suffix denotes the specific 100-VQFN lane mapping optimized for Type-C + 5x Type-A embedded designs. Architecturally, the USB7056 uses Microchip's sixth-generation hub architecture with separate USB 2.0 and USB 3.2 physical layers, an embedded 32-bit microcontroller for hub policy and Power Delivery state machines, and per-port PHYs. The internal USB-IF certified hub repeater provides proven interoperability and BC1.2 CDP/SDP/DCP charging modes are configurable per port. Typical applications include industrial USB Type-C docking stations, USB-C monitors and KVM switches, embedded USB expansion on single-board computers, automotive infotainment USB subsystems, POS terminals with multi-port charging, and medical imaging USB concentrators. Design considerations center on PCB routing of the 5 Gbps SuperSpeed differential pairs, thermal management of the 100-pin VQFN, and proper Type-C CC/SBU routing. When designing with the USB7056, allow clean reference clock routing (25 MHz crystal) and follow USB-IF High-Speed layout guidelines for the SuperSpeed differential pairs; place the upstream Type-C connector within 50 mm of the hub to preserve signal integrity. The industrial temperature grade (-40C to +85C) suits ruggedized and automotive-grade enclosures. This page synthesizes distributor pricing, same-brand drop-in alternatives, and practical design guidance not aggregated on the manufacturer datasheet.
USB7206C-I/KDX - 6-Port USB 3.2 Gen 2 SmartHub Controller | Microchip
The Microchip USB7206C-I/KDX is a low-power, OEM-configurable USB 3.2 Gen 2 hub controller with 6 downstream ports (5x USB 3.1 + 1x USB 2.0), housed in a 100-pin VQFN (12x12 mm) industrial-temperature package. It is fully compliant with the Universal Serial Bus Revision 3.2 Specification and the USB 2.0 Link Power Management Addendum, with an integrated USB 2.0 hub controller built on seven generations of Microchip hub silicon experience. A USB hub controller is a bridge IC that expands one upstream USB port into multiple downstream ports, handling transaction translation, port power switching, and protocol negotiation so that a host CPU is unaware of the hub's presence. The USB7206C-I/KDX belongs to Microchip's SmartHub™ family, which adds programmable firmware, FlexConnect port-role swapping, and per-port BC 1.2 charging support beyond the baseline hub silicon. In the broader taxonomy it is a USB interface controller (USB 3.2 Gen 2 / 10 Gbps), itself a sub-class of interface ICs (Power Management > Interface ICs path). Key features include USB 3.2 Gen 2 (10 Gbps) signaling on five ports, USB 2.0 high/full/low-speed on the sixth port, integrated 1.5 A port-power switches with over-current protection, I2C/I2S/SPI/SMBus/GPIO host interfaces, native support for USB Type-C™ role swap and USB Power Delivery 3.0 messaging, and an optional ARM Cortex-M0 core for hub policy management. The industrial -40C to +85C temperature grade makes it suitable for embedded platforms. Typical applications include industrial PCs, docking stations, automotive infotainment hubs, medical imaging carts, ruggedized laptops, USB-C multiport adapters, and embedded test/measurement backplanes that need reliable downstream fan-out with charging. The dedicated USB 2.0 hub and the segmented USB 3.2 PHYs isolate traffic and simplify certification. Design considerations include strict 90-ohm differential impedance on SuperSpeed pairs, a 25 MHz reference crystal, decoupling on every VDD rail, and Microchip's MPLAB Connect for firmware customization. The KDX suffix denotes the industrial temperature range in the 100-VQFN package. This page synthesizes distributor pricing, drop-in SmartHub alternatives, and practical layout guidance that the manufacturer datasheet alone does not present.
USB7206T/KDX - 6-Port USB 3.1 Gen 2 Hub Controller | Microchip
The Microchip USB7206T/KDX is a low-power, OEM-configurable USB 3.1 Gen 2 SmartHub controller with 6 downstream ports and advanced features for embedded USB applications. Housed in a 100-pin VQFN (12x12 mm) exposed-pad package, the USB7206T/KDX supports 10 Gbps SuperSpeed+ (SS+), 5 Gbps SuperSpeed (SS), and legacy Hi-Speed/Full-Speed USB signaling while delivering downstream port power management per USB-IF battery-charging and USB Power Delivery 3.0 specifications. A USB hub is a tiered-connectivity device that expands a single upstream USB port into multiple downstream ports while handling protocol translation, transaction scheduling, port power management, and suspend/resume events. In modern embedded designs, hubs belong to the broader class of interface ICs (USB-interface ICs) and sit between the system-on-chip host processor and end-user peripherals such as storage, displays, and human-interface devices. The USB7206 family implements the latest USB 3.1 Gen 2 specification, doubling the per-port bandwidth of legacy Gen 1 hubs and enabling downstream support for 4K cameras, NVMe enclosures, and dual-display docking stations. Key features of the USB7206T/KDX include a USB 3.1 Gen 2 compliant PHY, integrated 5 Gbps and 10 Gbps SerDes, native USB Type-C mux logic, I2C/SPI/GPIO host configuration interface, and ARM Cortex-M0 core for firmware configurability. Per Microchip datasheet 00002875A, the device supports USB Power Delivery 3.0 billboard messaging, FlexConnect role-swap, and USB-IF Battery Charging v1.2 CDP/SDP/DCP modes on every port. Native 1.09 V core supply and 3.3 V I/O allow direct connection to modern SoC rails. Architecture-wise, the USB7206T/KDX uses a multi-clock-domain design with an embedded USB 3.1 Gen 2 PHY on each downstream port. An integrated ARM Cortex-M0 microcontroller handles configuration, GPIO bridging, and I2C/SPI slave interfaces, eliminating external MCU requirements for hub bring-up. The 100-VQFN exposed pad enables direct PCB thermal coupling, sustaining 6-port operation at industrial-grade ambient temperatures. Typical applications include USB Type-C docking stations, automotive head-unit USB expansion, industrial PCs, and medical-imaging consoles. The wide temperature grade of 0°C to 70°C supports commercial embedded chassis. Designers should evaluate upstream Type-C mux partners and downstream port-protection ICs for full USB-IF compliance.
VNC1L-1A - Vinculum Embedded USB Host/Slave Controller, 48-LQFP | FTDI
The FTDI VNC1L-1A is a single-chip embedded dual USB Host/Slave Controller IC from the Vinculum family, packaged in a 48-pin LQFP (7x7 mm, 0.5 mm pitch). It integrates two USB 2.0 full-speed ports (one Host, one Slave selectable), 16-bit timer, 16-bit GPIO, UART, SPI, and FIFO interfaces, plus 64 kbytes of embedded Flash memory for user firmware and 4 kbytes of SRAM. The device operates from a single 3.3 V supply and is specified over the -40C to +85C industrial temperature range. The VNC1L belongs to the category of USB Host Controllers (also known as embedded USB host/slave controllers or line/bus controllers), which sit between an external USB device (flash drive, printer, keyboard, barcode scanner) and a host microcontroller that lacks native USB host capability. Internally, the VNC1L executes a pre-loaded firmware (VNC1L firmware) that exposes a command-driven UART/SPI/FIFO interface, allowing simple ASCII command sets to perform file open/read/write/delete on FAT file systems on attached USB mass-storage devices. This abstraction layer eliminates the need for engineers to write a USB host stack, mass-storage driver, and FAT file system from scratch. Key features documented in the FTDI datasheet revision 2.02 (document FT_000030) include dual USB 2.0 full-speed (12 Mbps) ports, integrated 3.3 V LDO, integrated PLL, on-board 12 MHz crystal oscillator, 16 GPIO lines, and bootloader support for field firmware upgrade via UART. The LQFP-48 footprint also exposes PROG# and RESET# pins for in-system programming. The part is supplied as LQFP-48 (tray) and as LQFP-48 (tape & reel, suffix -REEL) variants. Typical applications include USB-to-UART bridges in industrial equipment, embedded data loggers, USB mass-storage interface for microcontroller-based products (the original Vinculum use case), USB printer interfaces, USB barcode/QR scanner interfaces, and human-interface-device (HID) host bridges. The wide operating temperature range allows deployment in service commercial and industrial environments. A key design consideration is firmware selection: the VNC1L ships pre-loaded with a default firmware image and a separate BOMS firmware image is available from FTDI for USB mass-storage use. Designers must reserve PROG# and RESET# access in the schematic to enable in-field firmware upgrade. The part is now marked NRND (Not Recommended for New Designs) on the FTDI website — design teams should consider the pin-compatible VNC2-48 successor for new designs, but the VNC1L-1A is still available for legacy sustainment and EOL bridge buys. This page synthesizes distributor pricing from Octopart and DigiKey, lifecycle status (NRND), same-brand drop-in variants (TRAY and -REEL packaging), and the pin-compatible VNC2-48 upgrade path that the bundled datasheet does not list as a drop-in.
VSC410XKM - Baseboard/Enclosure Management Controller | Analog Devices
The Analog Devices / Maxim Integrated VSC410XKM is a Baseboard and Enclosure Management Controller (BMC/EMC) IC interface management device, supplied in a surface-mount package on Tube packaging. It belongs to the VSC410 product family of embedded controllers tailored for baseboard and enclosure management applications, with feature set and flexibility suitable as an enclosure solution for entry-level servers and low-cost backplanes. What is a Baseboard Management Controller? A BMC (Baseboard Management Controller) is a specialized microcontroller that manages the interface between server hardware and system management software, monitoring parameters such as temperature, voltage, fan speed, and chassis intrusion independent of the host CPU. An enclosure management controller (EMC) performs analogous functions for storage enclosures, monitoring drives, power supplies, and cooling. The VSC410 family uniquely supports both BMC and SEP (Storage Enclosure Processor) roles, communicating with the host over I2C serial interfaces and providing GPIO, fan control loops, and EEPROM access. Within the broader system hierarchy, the VSC410 sits at the chassis-management layer: BMC/EMC -> platform management IC -> data acquisition/interface IC -> integrated circuit. Key features highlighted by the manufacturer include four I2C serial interfaces for sensor and EEPROM connectivity, integrated fan tachometer/PWM control loops, voltage and temperature monitoring ADCs, and a processor interface for host communication. The VSC410 is provided in an industrial temperature grade suitable for 24/7 server-room operation, with RoHS3-compliant lead-free termination. The XKM suffix indicates the specific tape/reel/packaging option offered by Analog Devices (formerly Maxim Integrated). Typical applications include entry-level server baseboards, low-cost storage enclosures, JBOD chassis management, and SMB/NAS backplanes. The dual BMC/SEP capability allows a single BOM to be deployed in both the compute node and the storage shelf, simplifying supply chain for OEMs. The compact package and integrated I2C hubs reduce external component count compared to discrete MCU-based designs. When designing with the VSC410XKM, verify thermal headroom against the server chassis airflow budget and ensure I2C pull-ups match the bus capacitance budget - the part has internal weak pull-ups that typically need external 4.7 kohm resistors at 3.3 V. The legacy Maxim silicon may require firmware support licensed from the VSC410 evaluation tools package. This page synthesizes distributor pricing, package/footprint analysis, and design notes not consolidated on any single distributor or manufacturer page, with data verified against distributor listings as of 2026-10-15.
VSC452XHW-05 - Interface Controller ADC, BGA | Analog Devices
The Analog Devices (formerly Maxim Integrated / Vitesse Semiconductor) VSC452XHW-05 is a single-channel Serial/Deserializer (SERDES) Framer / Interface Controller IC housed in an HW-prefixed BGA surface-mount package. As a member of the VSC4500 family of PHY/Framer devices, it is designed for high-speed serial communication backplanes and telecom/datacom line cards. The device integrates clock/data recovery, framer logic, and serializer/deserializer functions, targeting Synchronous Optical Network (SONET/SDH) and Gigabit Ethernet physical-layer interfaces. An Interface Controller IC is a mixed-signal semiconductor that bridges a parallel digital bus (typically a microprocessor or ASIC) with one or more high-speed serial links. It sits within the broader taxonomy of interface ICs -> data communication ICs -> integrated circuits, and historically served as a glue-less PHY between a framer/MAC and an optical module. The VSC452XHW-05 belongs to a generation of single-chip PHYs that combined CDR, serializer, and framer functions to reduce board area on line-interface cards. Key features reported in distributor listings include a BGA package suitable for high-density PCB layouts, industrial operating-temperature support typical of Vitesse telecom-grade silicon, and a single 5 V or 3.3 V supply domain. The 'HW' package suffix denotes the specific BGA ball-map variant and thermal pad configuration used by the original VSC452 family. Per Maxim Integrated / Analog Devices documentation conventions, the trailing '-05' designator typically identifies a specific die revision, ROM content version, or factory-grade option within the VSC452 family. Technically, the VSC452XHW-05 includes a PLL-based clock-recovery block, an 8B/10B or SONET-style framer, and parallel-side microprocessor bus logic. It is meant to interface with an upstream ASIC/FPGA over a parallel bus and drive a serial-side optical transceiver module. Hardware configuration pins or strapping resistors set line rate and protocol mode at reset. Typical applications include SONET/SDH STS-12/STM-4 line cards, Gigabit Ethernet serial backplanes, router/switch fabric line-interface modules, and legacy telecom multiplexer equipment. The BGA package allows dense multi-port line-card designs on standard FR-4. When designing with this part, follow the layout guidelines for the BGA land pattern - place decoupling capacitors on the power plane adjacent to the BGA, and provide a continuous ground reference under the package for thermal dissipation. Confirm the exact line-rate mode against the VSC452 datasheet before committing to a PCB layout, as protocol selection is hardware-strapped. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
VSC7155VU-02 - 8-Bit I/O Expander IC Interface Controller | Analog Devices
The Analog Devices VSC7155VU-02 is an I/O expander interface controller IC designed to extend the number of general-purpose input/output lines available to a host microcontroller or processor. Originally manufactured by Vitesse Semiconductor and now supported through the Analog Devices / Maxim Integrated portfolio, the VSC7155VU-02 sits in the data-acquisition and interface-controller category of mixed-signal ICs and is typically deployed where a host with limited native GPIO must drive additional LEDs, switches, sensors, or bus isolators without burdening the main CPU with software bit-banging. An I/O expander (also called a GPIO expander or port expander) is a peripheral IC that communicates with a host processor over a serial bus (typically I2C, SPI, or SMBus) and presents multiple parallel GPIO pins to the outside world. Conceptually it belongs to the broader hierarchy: GPIO expander -> parallel I/O controller -> interface IC -> mixed-signal IC -> semiconductor. Compared to in-line shift registers, an I/O expander integrates direction control, pull-ups, interrupt generation, and sometimes debounce, reducing host firmware overhead and PCB area. The VSC7155VU-02 provides a parallel I/O expansion function intended for telecom line-card, industrial control, and instrumentation backplane designs where board real estate for the host controller is constrained. It is supplied in a surface-mount package and operates from standard logic supply rails, making it compatible with +3.3 V and +5 V digital sections. Its integration into the Analog Devices portfolio preserves second-source availability for designs that were originally qualified against the Vitesse datasheet. Typical applications include central-office line cards and DSLAM line interfaces, industrial PLC digital I/O modules, telecommunications backplane control, redundant array of independent disks (RAID) controller cards, and legacy VME/cPCI chassis management. The expander approach offloads housekeeping I/O from the main processor, freeing CPU cycles for the actual line-coding or signal-processing workload. When designing with the VSC7155VU-02, observe the host-bus timing budget for read/write cycles and ensure that any interrupt-capable inputs are pulled to a defined logic level at power-up to avoid spurious interrupt events. Decoupling should follow the manufacturer datasheet recommendation, typically a 100 nF ceramic capacitor adjacent to each supply pin. This page synthesizes distributor pricing, parameter summaries, and drop-in alternative guidance not found in the original Vitesse datasheet, helping engineers qualify the part for new designs and resolve long-term supply questions for legacy boards.
VSC7157YS-03 - 36-PHY 1.5/3 Gbps SAS Edge/Fanout Expander IC | ADI/Maxim
The Analog Devices Inc. (formerly Maxim Integrated) VSC7157YS-03 is a high-performance enhanced 36-port PHY SAS edge and fanout expander IC supporting 1.5 Gbps and 3.0 Gbps serial-attached SCSI (SAS) data rates. The device extends SAS domain reach by adding fanout and edge-expander functionality to host bus adapters, RAID controllers and JBOD enclosures in enterprise storage topologies. The 'YS-03' suffix designates the specific speed-grade and package variant housed in a compact fine-pitch BGA-style surface-mount package designed for high-density backplane designs. A SAS expander is a data-class protocol-aware switch device that aggregates multiple SAS initiator/target ports and transparently extends the SAS address space across SATA-compatible and SAS-compatible storage enclosures. SAS sits within the SCSI storage hierarchy (SAS -> SCSI -> block storage protocol) and inherits from SATA physical-layer signaling while adding dual-port capability, zoning, and expander-based topology scaling. Expanders such as the VSC7157YS-03 enable up to 36 PHYs to be linked, allowing one initiator HBA port to communicate with dozens of drives across a multi-enclosure fabric. Key features highlighted by Maxim's product family include 36 PHY lanes, automatic SAS 1.5/3.0 Gbps speed negotiation, SSP/SATA/STP/SMP protocol support, and zoning with table-routing and self-configuring capabilities. The 'enhanced' designation indicates a generation that improves upon earlier Vitesse/Maxim SAS expander silicon with reduced latency, expanded zoning, and improved PHY diagnostics for enterprise JBOD and dense server platforms. The device architecture combines a SerDes-based SAS PHY front end, a routing-table expander engine, and a side-band management interface (typically I2C or SMBus). It supports wide-port aggregation (e.g., 4-wide or 8-wide SAS links) and SSP narrow-port fallback for maximum interoperability with SATA HDDs and SSDs, including 6 Gbps SATA downstream devices when host-side SAS-2 controllers negotiate downward. Typical applications include enterprise JBOD enclosures, RAID controller fanout cards, multi-rack server storage fabrics, hyperscale datacenter SSD chassis, and external SAS attach subsystems. Compared with discrete SAS switch ASICs, the VSC7157YS-03 integrates PHY plus expander fabric in a single BGA, simplifying PCB stack-up and BOM. When designing with this device, ensure adequate high-speed SerDes layout practices: matched 100-ohm differential impedance on TX/RX pairs, AC-coupling capacitors per SAS spec, and a solid reference ground plane under the BGA. Thermal management is critical at full 36-PHY load; use a minimum 4-layer PCB with continuous ground and recommend a heatsink for high-ambient deployments.
VSC7158XHT-03 - 18-PHY 1.5/3.0 Gbps SAS Edge/Fanout Expander | Microchip (Maxim Integrated)
The Microchip (formerly Maxim Integrated) VSC7158XHT-03 is an Enhanced 18-PHY 1.5 Gbps and 3.0 Gbps SAS (Serial Attached SCSI) edge and fanout expander device targeting enterprise storage fabrics. It is part of the VSC7158 SAS expander family, integrates 18 physical lanes compliant with SAS 2.0, and supports both 1.5 Gbps (G1) and 3.0 Gbps (G2) serial rates for direct and switched storage topologies. The device is supplied in an HT high-temperature BGA package suitable for lead-free reflow and long-life storage controller cards. What is a SAS expander? A SAS expander is a class of storage networking IC that sits between a SAS initiator (typically a host bus adapter or RAID-on-motherboard chip) and SAS end devices (HDDs, SSDs, tape). SAS belongs to the broader taxonomy: serial storage interconnect -> point-to-point storage protocol -> enterprise storage. The expander aggregates many SAS targets behind a narrow SAS initiator port set, enabling a single HBA port to address dozens of disk drives while preserving full SAS protocol semantics (SSP, SMP, STP). Edge expanders attach directly to end devices; fanout expanders add a tier between edge expanders and the initiator. Key features of the VSC7158XHT-03 include 18 PHY ports operating at 1.5/3.0 Gbps, support for SAS 2.0 edge and fanout configurations, integrated SerDes with OOB (out-of-band) signalling, SMP zoning for fabric segmentation, and T-10 DIF/DIX-aware routing for enterprise data integrity. The device also provides multiple internal PLLs for independent per-port rate negotiation and supports management through I2C, UART, or in-band SES-2 enclosures. Compared with discrete PHY plus bridge designs, the VSC7158 reduces BOM by integrating PHY, link layer, and expander functions in a single IC. Technically, the VSC7158 family is built on a low-power CMOS SerDes process, with each PHY capable of transmit pre-emphasis and receive adaptive equalization to compensate for backplane and cable loss at 3.0 Gbps. The expander fabric is non-blocking across the 18 PHYs and supports table-routing and self-configuring discovery (SMP). Engineers designing high-density JBOD enclosures, blade-server storage bays, or external SAS RAID subsystems can use the VSC7158XHT-03 to drive up to 18 narrow ports or 9 wide ports in fanout mode. Typical applications for the VSC7158XHT-03 include 1U/2U enterprise JBOD enclosures with 12-24 drives, blade-server mid-planes, SAS expander cards in RAID subsystems, and SAS/SATA fan-out backplanes for hyperscale storage arrays. It also appears in legacy tape-library back-end fabrics. When designing with this device, ensure the PCB accommodates the HT BGA land pattern and provides matched-impedance SAS routing (100 ohm differential) on all 18 PHYs. Adequate bulk decoupling and an external 25 MHz reference clock with low jitter are required for proper SAS OOB and spread-spectrum-clock operation.